The state government should urgently turn its attention to drafting legislation to stop neo-Nazis from registering as a political party, leading experts in law and extremism have said.

Premier Chris Minns also warned those who wanted to sign up to the neo-Nazi-linked White Australia party that they risked being publicly exposed as racists, as the electoral commission is likely powerless to prevent such groups from registering.

As the government continues to grapple with fallout from the sight of 60 black-clad neo-Nazis rallying outside Parliament House on Saturday, with the approval of police, Minns has flagged legal and procedural changes that would prevent such a demonstration from happening again.

Constitutional law expert and UNSW Professor Rosalind Dixon said the government should,

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